Browse Prior Art Database

Optical Keyboard

IP.com Disclosure Number: IPCOM000081842D
Original Publication Date: 1974-Aug-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Uberbacher, EC: AUTHOR

Abstract

A fiber-optic keyboard utilizes code-grouped fiber bundles 1 (Fig. 1), the terminal ends of which are secured in comb-like structures 2 (Fig. 2). When a key is operated (Fig. 3), associated groups of fiber bundles receive a select pattern of light and no light via associated windows 3 in plexiglass light transmission rod 4 (Fig. 4). The operated kev positions a code mask 5 between the fibers and the normally unblocked window transferring a code pattern of light and no light to the associated groups of bundles. Remote ends of the fiber bundles of each group may be concentrated in ordered digit groupings to permit shared usage of digit light detectors. Alternately, groups may be coupled to individual detector arrays.

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Optical Keyboard

A fiber-optic keyboard utilizes code-grouped fiber bundles 1 (Fig. 1), the terminal ends of which are secured in comb-like structures 2 (Fig. 2). When a key is operated (Fig. 3), associated groups of fiber bundles receive a select pattern of light and no light via associated windows 3 in plexiglass light transmission rod 4 (Fig. 4). The operated kev positions a code mask 5 between the fibers and the normally unblocked window transferring a code pattern of light and no light to the associated groups of bundles. Remote ends of the fiber bundles of each group may be concentrated in ordered digit groupings to permit shared usage of digit light detectors. Alternately, groups may be coupled to individual detector arrays.

Detected outputs may be used to energize corresponding character displays and/or to provide buffered "keying" input to electronic data processing apparatus. The light illuminating rod 4 may be derived from light sources in the data processing electronics.

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